FZUS53 KGRB 181337
NSHGRB

Nearshore Marine Forecast
National Weather Service Green Bay WI
836 AM CDT Wed Mar 18 2026

For waters within five nautical miles of shore on Lake Michigan

LMZ521-522-181600-
Green Bay south of line from Cedar River to Rock Island Passage
and north of a line from Oconto WI to Little Sturgeon Bay WI-
Green Bay south of line from Oconto WI to Little Sturgeon Bay WI-
836 AM CDT Wed Mar 18 2026

.TODAY...SW wind 10 to 15 kts. Waves 2 ft or less. A chance of
light snow and freezing drizzle in the morning.
.TONIGHT...SW wind 5 to 10 kts. Waves 2 ft or less. A chance of
light freezing rain and light snow.
.THURSDAY...NW wind 5 to 10 kts veering NE mid-day, then veering
SE early in the afternoon. Waves 2 ft or less. Partly cloudy.
.THURSDAY NIGHT...S wind 5 to 10 kts. Waves 2 ft or less. Mostly
cloudy.

$$

LMZ541-181600-
Rock Island Passage to Sturgeon Bay WI-
836 AM CDT Wed Mar 18 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

.TODAY...SW wind 15 to 25 kts decreasing to 10 to 15 kts early in
the afternoon. Waves 4 to 7 ft building to 5 to 8 ft in the
afternoon. A chance of light snow and freezing drizzle in the
morning.
.TONIGHT...SW wind 10 to 15 kts. Waves 4 to 7 ft subsiding to
2 to 4 ft after midnight. A chance of light snow. A chance of
light rain and light freezing rain after midnight.
.THURSDAY...NW wind 5 to 10 kts veering N mid-day, then veering S
early in the afternoon. Waves 1 to 3 ft. Partly cloudy.
.THURSDAY NIGHT...S wind 5 to 10 kts. Waves 2 ft or less. A
chance of light rain after midnight.

$$

LMZ542-543-181600-
Sturgeon Bay to Two Rivers WI-Two Rivers to Sheboygan WI-
836 AM CDT Wed Mar 18 2026

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TODAY...SW wind 15 to 25 kts decreasing to 10 to 15 kts early in
the afternoon. Waves 4 to 7 ft. A chance of light snow and
freezing drizzle in the morning.
.TONIGHT...SW wind 10 to 15 kts. Waves 3 to 5 ft subsiding to
1 to 3 ft after midnight. A chance of light rain, light freezing
rain and light snow. A Small Craft Advisory may be needed.
.THURSDAY...N wind 5 to 10 kts veering E early in the afternoon.
Waves 2 ft or less. Partly sunny.
.THURSDAY NIGHT...S wind 10 to 15 kts. Waves 2 ft or less. Mostly
cloudy.

$$

See Lake Michigan Open Lake Forecast for Friday through Sunday.

Wave height forecast is for ice free areas.